former presidents jimmy carter and first lady michelle obama is expected to speak on tuesday, september 4. wednesday, september 5, elizabeth warren, who is running for senate in massachusetts, will be making a speech. the nominating speech will be made by former president bill clinton. a vote on the nomination and a roll call of states takes place on september 5. on thursday, vice president biden speaks and president obama makes his acceptance speech. you can see that on the c-span network in you can watch it on c-span radio. go to our web page, c-span.org. back to the phones, brian in san antonio, texas is on the line. how should political conventions be changed in 2016? caller: not at all. i think the conventions are fine. somehow, we need to hear what they have to say. what bothers is the way that the media covers the convention. it is kind of horrifying. people are flipping around different channels and they are seeing that other channels are leading things out and completely cutting out the heart touching stories. it is amazing to me the baez the media has been about this. -- biase